/Engine/Plugins/Runtime/GeoReferencing/Source/GeoReferencing/Public/GeoReferencingSystem.h
Get the East North Up vectors at a specific location - Not in engine frame, but in pure ECEF Frame !
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="GeoReferencing|ENU", Meta=(DisplayName="Get ECEF ENU Vectors At ECEF Location")) void K2_GetECEFENUVectorsAtECEFLocation ( const FVector & ECEFCoordinates, FVector & ECEFEast, FVector & ECEFNorth, FVector & ECEFUp )